linux-kernel - Re: [PATCH 5/8] thermal/drivers/cpu_cooling: Introduce the cpu idle cooling driver

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Date:   Thu, 1 Feb 2018 09:25:29 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Vincent Guittot <vincent.guittot@...aro.org>
Cc:     Eduardo Valentin <edubezval@...il.com>,
        Kevin Wangtao <kevin.wangtao@...aro.org>,
        Leo Yan <leo.yan@...aro.org>,
        Amit Kachhap <amit.kachhap@...il.com>,
        viresh kumar <viresh.kumar@...aro.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Javi Merino <javi.merino@...nel.org>,
        "open list:THERMAL" <linux-pm@...r.kernel.org>
Subject: Re: [PATCH 5/8] thermal/drivers/cpu_cooling: Introduce the cpu idle
 cooling driver

On 01/02/2018 08:57, Vincent Guittot wrote:
> On 31 January 2018 at 16:27, Daniel Lezcano <daniel.lezcano@...aro.org> wrote:
>> On 31/01/2018 10:56, Vincent Guittot wrote:
>>> On 31 January 2018 at 10:50, Daniel Lezcano <daniel.lezcano@...aro.org> wrote:
>>>> On 31/01/2018 10:46, Vincent Guittot wrote:
>>>>> On 31 January 2018 at 10:33, Daniel Lezcano <daniel.lezcano@...aro.org> wrote:
>>>>>> On 31/01/2018 10:01, Vincent Guittot wrote:
>>>>>>> Hi Daniel,
>>>>>>>
>>>>>>> On 23 January 2018 at 16:34, Daniel Lezcano <daniel.lezcano@...aro.org> wrote:
>>>>>>
>>>>>> [ ... ] (please trim :)
>>>>>>

[ ... ]

> struct cpuidle_cooling_device {
>          struct thermal_cooling_device *cdev;
>          struct cpumask *cpumask;
>          struct list_head node;
>          struct hrtimer timer;
>          struct kref kref;
>          atomic_t count;
>          unsigned int idle_cycle;
>          unsigned int state;
> };
> 
> struct cpuidle_cooling_cpu {
>         struct task_struct *tsk;
>         wait_queue_head_t waitq;
> };
> DECLARE_PER_CPU(struct cpuidle_cooling_cpu *, cpu_data);
> 
> You continue to have cpuidle_cooling_device allocated dynamically per
> cluster and added in the list but task and waitq are stored per cpu

Ok. I will try that.


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